Nimonic 80A (UNS N07080 / W.Nr. 2.4952, 2.4631)

Nimonic 80A (UNS N07080 / W.Nr. 2.4952, 2.4631) is a wrought, age-hardenable nickel-chromium alloy. Nimonic 80A is similar to Nimonic 75 but made precipitation hardenable by additions of aluminium and titanium. Alloy 80A has good corrosion and oxidation resistance and high tensile and creep-rupture properties at temperatures to 815℃ (1500ºF). Vacuum refined versions are also available. It is used for gas-turbine components (blades, rings, discs), bolts, tube supports in nuclear generators, exhaust valves in internal combustion engines and has many other offshore/marine, automotive and electrical applications.

Equivalent Grades

Trademark	GB	GOST	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
Nimonic 80A	GH4080A	–	–	N07080	NiCr20TiAl	2.4952 2.4631	NiCr20TiAl NC20TA	NiCr20TiAl N80A	NCF80A	–

Chemical Composition, %

Alloy

Nimonic 80A

≤0.10

≤1.00

≤0.020

≤0.015

18.0-21.0

Bal

≤2.00

1.0-1.8

1.8-2.7

≤0.50

≤3.00

Typical Physical and Mechanical Properties (RT, Solution Annealed+Aged)

Density, g/cm3	Melting Point, ℃	Tensile Strength, MPa	Yield Strength, MPa	ELongation, %	Hardness, HRB
8.19	1320-1365	1250	780	35	/

Available Products and Specifications

Rod, Bar, Wire and Forgings	ASTM B637, BS 3076&HR1
Plate, Sheet and Strip	BS HR 201
Pipe and Tube	BS HR 401
Welding Product	–
Others	DIN 17742

Features

High oxidation and corrosion resistance
Outstanding mechanical properties after age hardening
Suitable for applications where elevated temperatures and continual stresses are a primary consideration
Good machinability
Easily welded